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“One line of inquiry is that he may have been the victim of a robbery as he was found without his Iphone 6.

"I would like to speak with anyone who saw Christopher between the railway station and Arbuthnot Road. He was wearing a distinctive green camouflage jacket.

"Have you found a mobile phone in this area of New Cross? Any piece of information, however small, will help us to discover what happened in the early hours of that morning."

Emma Baylis, KPMG Partner who works with Christopher, said: "“We have been absolutely devastated to hear what has happened to Chris. He is a well respected and well liked colleague in our tax team and has worked with us for over three years.

"We are in regular contact with his family to offer our support and we hope that this appeal will encourage people to come forward with any information that they might have to help the police with their investigations.

"We are all hoping that Chris makes a full and speedy recovery and his friends and family are in our thoughts during this difficult time.”

Officers are keen to hear from anyone who saw Christopher that night.

He is described as white, approximately 5ft 7ins tall, of slim build with brown hair. He was wearing a green camouflage jacket, black trousers and trainers.

Anyone with information is asked to contact officers at Lewisham via 101.